Oily solid cosmetic and method for production thereof

a solid cosmetic and oil-based technology, applied in the field of oil-based solid cosmetics, can solve the problems of inferior properties of use and feelings upon use, lack of smoothness and adhesion to skin, and inconvenient use of conventional oil-based liquid type and gel type formulations, so as to improve the stability of vitamin a and/or a fatty acid ester, the effect of improving the comfort of us

Inactive Publication Date: 2006-06-29
KOBAYASHI KOSE CO LTD
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  • Summary
  • Abstract
  • Description
  • Claims
  • Application Information

AI Technical Summary

Benefits of technology

[0009] The inventors of the present invention conducted various researches under the aforementioned factual situation, and as a result, they found that the aforementioned inconvenience upon use and feelings upon use could be improved by preparing a cosmetic containing vitamin A and / or a fatty acid ester thereof as an oil-based solid cosmetic, especially a stick-shaped oil-based solid cosmetic, containing an oily ingredient existing as paste and / or liquid at room temperature and silicic anhydride. They further found that stability of vitamin A and / or a fatty acid ester thereof could be improved by blending with an oil-soluble antioxidant, and the cosmetic exhibiting the lasting effect thereof could be obtained.

Problems solved by technology

Conventional oil-based liquid type and gel type formulations are inconvenient for taking out from a bottle or tube to hand or cotton, and show inferior properties for use and feelings upon use such as lack of smoothness and adhesion to skin upon use.

Method used

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Examples

Experimental program
Comparison scheme
Effect test

examples

[0031] Hereafter, the present invention will be explained more specifically by referring to examples. However, the present invention is not limited by the examples at all.

example 10

Lip Cream (Metal Plate-Filled Type)

[0045]

(Ingredients)(%) 1. Polyethylene / microcrystalline wax mixture2.5 2. Polyethylene wax2.0 3. Petrolatum20.0 4. Glyceryl tri-2-ethylhexanoate20.0 5. Squalane5.0 6. Liquid paraffinbalance 7. Heavy liquid isoparaffin (Note 1)20.0 8. Dimethyldichlorosilane-treated silicic anhydride (Note 2)10.0 9. 1,3-Butylene glycol0.510. Sorbitan sesquioleate0.111. Acrylic acid / alkyl methacrylate copolymer (Note 3)0.0112. Aloe vera extract liquid0.113. BHT0.114. Vitamin A1.015. Vitamin A palmitic acid ester0.516. Fragrance0.05

Note 1: Parleam 18 (produced by Nippon Oil & Fats Co., Ltd.)

Note 2: AEROSIL R-974 (produced by Nippon Aerosil Co., Ltd., mean particle diameter of primary particles: 12 nm)

Note 3: Pemulen TR-2 (produced by NOVEON)

(Production Method)

[0046] The ingredients (1) to (7) and (13) to (16) were uniformly heated and mixed, then added with the ingredient (8), (9) to (12) and (16), and uniformly mixed. This mixture was filled in a container and s...

example 11

Lipstick (Stick Shape)

[0048]

(Ingredients)(%) 1. Glyceryl (behenate / eicosanedicarboxylate)5.0 2. Polyethylene wax5.0 3. Candelilla wax5.0 4. Rosin acid pentaerythritol ester2.0 5. Heavy liquid isoparaffin (Note 1)30.0  6. Polybutene (Note 2)5.0 7. Liquid Paraffinbalance 8. Glyceryl tri-2-ethylhexanoate15.0  9. Silicic anhydride (Note 3)0.510. Red No. 202Optimum amount11. Yellow No. 4Optimum amount12. Fragrance 0.0513. BHT0.114. Vitamin A palmitic acid ester1.0

Note 1: Parleam 18 (produced by Nippon Oil & Fats Co., Ltd.)

Note 2: Polybutene 300R (produced by Idemitsu Petrochemical Co., Ltd.)

Note 3: AEROSIL 300 (produced by Nippon Aerosil Co., Ltd., mean particle diameter of primary particles: 7 nm)

(Production Method)

[0049] The ingredients (1) to (8), (13) and (14) were uniformly heated and mixed, then added with the ingredient (9) and (10) to (12), and uniformly mixed. This mixture was molded by filling and solidified to obtain a product.

[0050] The lipstick of Example 11 in the sh...

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PUM

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Abstract

An oil-based solid cosmetic comprising (A) vitamin A and/or a fatty acid ester thereof, (B) silicic anhydride, (C) an oil-soluble antioxidant, and (D) an oily ingredient existing as paste and/or liquid at room temperature is disclosed. The aforementioned oil-based solid cosmetic, wherein the ingredient (B) is aerosol silicic anhydride, and the aforementioned oil-based solid cosmetic, wherein the ingredient (D) is polybutene and/or heavy liquid isoparaffin are also disclosed.

Description

TECHNICAL FIELD [0001] The present invention relates to an oil-based solid cosmetic which can be stably blended with vitamin A and / or a fatty acid ester thereof, has favorable properties for use, and exhibits favorable feelings upon use, and a method for producing the same. BACKGROUND ART [0002] It is known that vitamin A and / or a fatty acid ester thereof is an ingredient effective for improvement of rough skin, prophylactic or therapeutic treatment of skin keratosis etc., further, prevention and recovery of aging of skin, and the like. However, vitamin A and / or a fatty acid ester are structurally very unstable, and they may easily cause isomerization, decomposition, polymerization etc. with light, air, heat, metal ions, and the like. Therefore, it is difficult to stably blend it in cosmetics. In order to solve the aforementioned problem, there have been made approaches such as blending of antioxidant or metal ion sequestering agent, and blending of a lot of oil ingredient. [0003] F...

Claims

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Application Information

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Patent Type & Authority Applications(United States)
IPC IPC(8): A61K8/81A61K8/25A61K8/67A61Q1/04A61Q1/06A61Q19/00
CPCA61K8/25A61K8/671A61Q19/00A61Q1/04A61Q1/06A61K8/8111
Inventor MIIDA, ATSUSHIITO, TOSHIYUKINAKAYAMA, JUNKOWATANABE, SOICHIROHATA, TSUYOSHI
Owner KOBAYASHI KOSE CO LTD
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